Long-term stable measurement

Temperature acquisition is a major aspect of measurement technology. Virtually every application measures temperatures, usually via thermocouples or RTDs. Delphin products have been optimised for high-precision temperature measurement. Delphin‘s decades of experience go into their measurement devices. Analog inputs can be confi gured to any type of thermocouple or 4-wire RTD. This is made possible through the use of high-resolution, galvanically isolated 24-bit A/D converters and high-precision internal power sources for reference-current feeds. No additional converters are required when using Delphin products.

Application features

High-precision temperature measurement of up to +/- 0.05K
Universal inputs for RTDs and any thermocouple type (K, J, B, S, …)
Long-term measurement stability with only negligible drift
No additional requirement for measurement converters, includes galvanic isolation
Stand alone temperature measurement as well as PC-supported operation via LAN or USB

Practical example: Multi-channel temperature measurement at a gas-turbine test stand

On a large turbine test stand, around 3000 temperatures are measured. A range of thermocouple types are being used as well as resistance thermometers for precision measurements. The temperatures are recorded with 64-channel measurement devices, type KTM, from Delphin. The signals are connected using sub-miniature thermo connectors. Measurement data is stored independently within the Delphin devices and simultaneously transmitted via LAN for centralised data recording on a server using ProfiSignal. A total of 12,000 measurement values are recorded at the test stand. Scalable Message devices are used to directly receive temperatures at the point where the sensors are mounted. The devices are calibrated every two years to guarantee measurement precision.